Analysis and Design of a Multicell Topology Based on Three-Phase/Single-Phase Current-Source Cells

Pedro E. Melin, Jaime A. Rohten, Jose R. Espinoza, Carlos R. Baier, Eduardo E. Espinosa, Javier A. Muñoz, Javier A. Riedemann

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

This work proposes a multicell topology based on current-source cells in order to inherit the advantages of current-source topologies such as reduced load dv/dt voltage and natural bidirectional power flow and to adopt a similar behavior of the multicell topology based on a voltage source converter such as voltage controlled behavior where nC cells are connected in series to feed one load phase. In order to check the technical feasibility and performance of the proposed topology, a mathematical model is introduced and studied and key design guidelines of passive components are defined. The analysis shows the possibility of using components with a lower voltage rating than that of the classic multilevel current source topologies and allows the use of low switching frequencies in both rectifier and inverter stages while at the same time obtaining a high-quality waveform in both load voltage and converter input currents. A case of example is used to corroborate the theoretical analysis and the component design methodology, as well as the performance of the topology using a low-power prototype.

Original languageEnglish
Article number7332755
Pages (from-to)6122-6133
Number of pages12
JournalIEEE Transactions on Power Electronics
Volume31
Issue number9
DOIs
StatePublished - Sep 2016
Externally publishedYes

Keywords

  • Cascaded H-bridge based on current-source inverters
  • current-source converters

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